CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands		Total	Cumulative Effect, Period Of Adoption, Adjustment	Various Stock Compensation Plans And Agreements	Stock Repurchase Plan	Common Stock	Common Stock Various Stock Compensation Plans And Agreements	Common Stock Stock Repurchase Plan	Common Stock and Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period Of Adoption, Adjustment	Treasury Stock	Treasury Stock Various Stock Compensation Plans And Agreements	AOCI, Net of Tax
Beginning balance (in shares) at Dec. 31, 2021						141,907,954
Beginning balance at Dec. 31, 2021		$ 5,837,218							$ 1,893,725	$ 4,683,659		$ (649,785)		$ (90,381)
Increase (Decrease) in Stockholders' Equity
Net income		791,320								791,320
Other comprehensive loss		(709,651)												(709,651)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						640,053
Issuance of common stock pursuant to various stock compensation plans and agreements		32,836							32,836
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(244,978)	(1,385,517)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (18,983)	$ (99,990)								$ (18,983)
Cash dividends on common stock		(172,082)								(172,082)
Ending balance (in shares) at Sep. 30, 2022						140,917,512
Ending balance at Sep. 30, 2022		5,660,668							1,926,561	5,302,897		(768,758)		(800,032)
Beginning balance (in shares) at Jun. 30, 2022						140,917,389
Beginning balance at Jun. 30, 2022		5,609,482							1,914,232	5,064,650		(768,752)		(600,648)
Increase (Decrease) in Stockholders' Equity
Net income		295,339								295,339
Other comprehensive loss		(199,384)												(199,384)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						206
Issuance of common stock pursuant to various stock compensation plans and agreements		12,329							12,329
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(83)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(6)									(6)
Cash dividends on common stock		(57,092)								(57,092)
Ending balance (in shares) at Sep. 30, 2022						140,917,512
Ending balance at Sep. 30, 2022		5,660,668							1,926,561	5,302,897		(768,758)		(800,032)
Beginning balance (in shares) at Dec. 31, 2022						140,947,846
Beginning balance at Dec. 31, 2022		5,984,612							1,936,557	5,582,546		(768,862)		(765,629)
Beginning balance (Accounting Standards Update 2022-02) at Dec. 31, 2022	[1]		$ (4,262)								$ (4,262)
Increase (Decrease) in Stockholders' Equity
Net income		922,208								922,208
Other comprehensive loss		(109,748)												(109,748)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						857,501
Issuance of common stock pursuant to various stock compensation plans and agreements		32,851							32,851
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(319,398)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				(23,214)									(23,214)
Cash dividends on common stock		(205,741)								(205,741)
Ending balance (in shares) at Sep. 30, 2023						141,485,949
Ending balance at Sep. 30, 2023		6,596,706							1,969,408	6,294,751		(792,076)		(875,377)
Beginning balance (in shares) at Jun. 30, 2023						141,483,668
Beginning balance at Jun. 30, 2023		6,461,697							1,959,784	6,075,735		(791,890)		(781,932)
Increase (Decrease) in Stockholders' Equity
Net income		287,738								287,738
Other comprehensive loss		(93,445)												(93,445)
Issuance of common stock pursuant to various stock compensation plans and agreements (in shares)						5,682
Issuance of common stock pursuant to various stock compensation plans and agreements		9,624							9,624
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements (in shares)							(3,401)
Repurchase of common stock pursuant to the Stock Repurchase Program/various stock compensation plans and agreements				$ (186)									$ (186)
Cash dividends on common stock		(68,722)								(68,722)
Ending balance (in shares) at Sep. 30, 2023						141,485,949
Ending balance at Sep. 30, 2023		$ 6,596,706							$ 1,969,408	$ 6,294,751		$ (792,076)		$ (875,377)

[1] Represents the change in the Company’s allowance for loan losses as a result of the adoption of Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and the Vintage Disclosures on January 1, 2023. Refer to Note 2 — Current Accounting Developments and Summary of Significant Accounting Policies in this Form 10-Q for additional information.